i think the plurals of none living things which don't possess the sense of thinking like.. القمر الاقمار الشجرة الاشجار الجبل الجبال etc.

i don't unerstand your question as well but i will try to answer what may be can help .. the plural of (is) = ( are ) .. and plural of (it) what we use it for Inhumane the same (it)

Can be sent by the question again more clearly? :)